对称六相永磁同步电机转矩控制与仿真分析  

Torque Control and Simulation Analysis of a Symmetrical Six-Phase PMSM

作　　者：曹鹏勇 王建文[1] CAO Pengyong;WANG Jianwen(School of Mechanical and Power Engineering,East China University of Science and Technology,Shanghai 200237,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]华东理工大学机械与动力工程学院,上海200237 [2]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《华东理工大学学报（自然科学版）》2021年第6期753-760,共8页Journal of East China University of Science and Technology

基　　金：国家重点研发计划资助项目(2016YFF0203000)。

摘　　要：为改善多相电机转矩控制策略性能,以对称六相永磁同步电机为研究对象,结合其结构和绕组分布特点建立自然坐标系下数学模型。由于多相电磁耦合下计算复杂,推导出旋转坐标系下的矢量变换模型。针对多相电机启动转矩波动较大现象,提出一种新的基于空间矢量脉宽调制(SVPWM)技术的直接转矩控制(DTC)策略。在MATLAB/Simulink环境下,对电机的矢量解耦变换下的数学模型进行仿真研究。结果表明,相比于传统直接转矩控制,所设计的新算法对电机电磁转矩、磁链等方面具有更好的抗扰动性和调控性能,验证了所开发控制算法的有效性和可行性。In order to improve the performance of multi-phase motor torque control strategy,the symmetrical six-phase permanent magnet synchronous motor was taken as the research object.On the basis of its structure and winding distribution characteristics,a mathematical model in a natural coordinate system was established.In view of the complexity of calculation under multiphase electromagnetic coupling,the vector transformation model under the rotating coordinate system was derived.In consideration of the large starting torque fluctuation of multiphase motors,a new direct torque control(DTC)strategy based on SVPWM technology was proposed.In the MATLAB/Simulink environment,the mathematical model under the vector decoupling transformation of the motor was simulated.The results showed that the proposed control algorithm presented better anti-disturbance and regulation performance on the motor electromagnetic torque,flux linkage and other parameters than the traditional direct torque control.The study demonstrates the effectiveness and feasibility of the developed control algorithm.

关 键 词：对称六相PMSM 数学建模 空间矢量变换 SVPWM-DTC 转矩脉动 

分 类 号：TM351[电气工程—电机]